<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>通用选择器</title>
</head>

<body>


    <style>
        * {
            text-align: center;
            color: blue;
        }
    </style>

    <h1>Hello world!</h1>

    <p>页面上的每个元素都会受到样式的影响。</p>
    <p id="para1">我也是！</p>
    <p>还有我！</p>


</body>

</html>